Messages in this thread | | | From | Erich Focht <> | Subject | Re: Migrate pages from a ccNUMA node to another | Date | Tue, 30 Mar 2004 01:16:01 +0200 |
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Szia Zoltan,
I like the aproach very much and was hoping that someone will bring on-demand page migration to Linux.
> - Migrate pages identified by their physical addresses to another NUMA node You want this only for your "AI" keeping track of the hw counters in the chipset? I hope you can teach it to keep track of the bandwidth of all processes on the machine, otherwise it might disturb the processes more than it helps them... and waste the machine's bandwidth with migrating pages.
> - Migrate pages of a virtual user address range to another NUMA node This is good. I'm thinking about the rss/node patches, they would tell you when you should think about migrating something for a process. My current usage model would be simpler: for a given mm migrate all pages currently on node A to node B. But the flexibility of your API will certainly not remain unused.
...
> BTW Has someone a machine with a chip set other than i82870 ? ??? As far as I know SGI, HP, NEC and IBM have all their own NUMA chipsets for IA64. Was this the question? Are you looking for hardware counters?
Regards, Erich
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